Alert archive / Alabama / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 86, NWS Mobile, AL

February 7, 2017Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Feb 7, 2017, 4:44 PM CST for Baldwin County, Alabama. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Feb 7, 2017, 4:44 PM CST (22:44 UTC)
Expired
Feb 7, 2017, 5:19 PM CST
In force
35 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 84 km from the middle of the area, began a volume at 22:45 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 7, 11:50 AM CSTTornado WatchSPC6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.7 hours before the alert went out and 212 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2017-02-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 889 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2017-02-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 194 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
889 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
562 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
194 m²/s²
0-3 km storm-relative helicity
190 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.4

Open this sounding in Storm Lab

The text

As transmitted.

939 
WUUS54 KMOB 072244
SVRMOB
ALC003-072330-
/O.NEW.KMOB.SV.W.0086.170207T2244Z-170207T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
444 PM CST TUE FEB 7 2017

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  South central Baldwin County in southwestern Alabama...

* Until 530 PM CST

* At 443 PM CST, a severe thunderstorm was located 8 miles southwest
  of Bon Secour, or 8 miles west of Gulf Shores, moving east at 45
  mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Pensacola, Gulf Shores, Foley, Orange Beach and Bon Secour. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 600 PM CST for southwestern
Alabama...and northwestern Florida.

LAT...LON 3022 8798 3036 8794 3032 8744 3032 8746
      3031 8744 3030 8745 3029 8749 3030 8741
      3031 8742 3031 8740 3032 8738 3030 8716
      3023 8717 3022 8720
TIME...MOT...LOC 2243Z 275DEG 38KT 3023 8784 

HAIL...1.00IN
WIND...60MPH
 
$$
2 follow-up statements
504 
WWUS54 KMOB 072311
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
511 PM CST TUE FEB 7 2017

ALC003-072330-
/O.CON.KMOB.SV.W.0086.000000T0000Z-170207T2330Z/
Baldwin AL-
511 PM CST TUE FEB 7 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CST
FOR SOUTHEASTERN BALDWIN COUNTY...

At 510 PM CST, a severe thunderstorm was located near Orange Beach,
moving east at 55 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Pensacola.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 600 PM CST for southwestern
Alabama...and northwestern Florida.

LAT...LON 3022 8762 3033 8753 3032 8745 3032 8750
      3031 8744 3030 8745 3029 8749 3030 8741
      3031 8742 3032 8737 3032 8735 3031 8736
      3030 8716 3023 8717 3022 8720
TIME...MOT...LOC 2310Z 273DEG 47KT 3022 8752 

HAIL...1.00IN
WIND...60MPH
 
$$
393 
WWUS54 KMOB 072319
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
519 PM CST TUE FEB 7 2017

ALC003-072329-
/O.CAN.KMOB.SV.W.0086.000000T0000Z-170207T2330Z/
Baldwin AL-
519 PM CST TUE FEB 7 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BALDWIN COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

A tornado watch remains in effect until 600 PM CST for southwestern
Alabama...and northwestern Florida.

LAT...LON 3022 8762 3033 8753 3032 8745 3032 8750
      3031 8744 3030 8745 3029 8749 3030 8741
      3031 8742 3032 8737 3032 8735 3031 8736
      3030 8716 3023 8717 3022 8720
TIME...MOT...LOC 2317Z 275DEG 38KT 3021 8741 

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 7, 5:58 AM CSTRip Current StatementMOBBaldwin, Mobile42 hr
Feb 7, 10:16 AM CSTSevere Thunderstorm WarningMOBChoctaw, Washington59 min
Feb 7, 10:29 AM CSTSpecial Weather StatementMOBClarke46 min
Feb 7, 10:47 AM CSTSpecial Weather StatementMOBMobile28 min
Feb 7, 10:57 AM CSTSpecial Marine WarningMOB33 min
Feb 7, 11:17 AM CSTSpecial Weather StatementMOBClarke, Washington43 min
Feb 7, 11:33 AM CSTSevere Thunderstorm WarningMOBClarke, Monroe, Washington, Wilcox42 min
Feb 7, 12:06 PM CSTSpecial Weather StatementMOBEscambia39 min
Feb 7, 12:12 PM CSTSpecial Weather StatementMOBConecuh, Monroe33 min
Feb 7, 12:34 PM CSTSpecial Marine WarningMOB41 min
Feb 7, 12:42 PM CSTSpecial Marine WarningMOB63 min
Feb 7, 12:49 PM CSTSpecial Weather StatementMOBButler, Crenshaw41 min
Feb 7, 1:00 PM CSTSpecial Weather StatementMOBBaldwin, Mobile30 min
Feb 7, 1:06 PM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile39 min
Feb 7, 1:11 PM CSTSevere Thunderstorm WarningMOBMobile49 min
Feb 7, 1:21 PM CSTAreal Flood AdvisoryMOBMobile3 hr
Feb 7, 1:27 PM CSTSpecial Weather StatementMOBBaldwin48 min
Feb 7, 1:44 PM CSTSpecial Marine WarningMOB46 min
Feb 7, 1:46 PM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile44 min
Feb 7, 1:49 PM CSTSpecial Marine WarningMOB56 min
Feb 7, 1:52 PM CSTSpecial Weather StatementMOBConecuh38 min
Feb 7, 2:02 PM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile58 min
Feb 7, 2:20 PM CSTSpecial Weather StatementMOBButler, Conecuh, Crenshaw40 min
Feb 7, 2:26 PM CSTSpecial Weather StatementMOBCovington, Escambia49 min
Feb 7, 2:30 PM CSTSpecial Marine WarningMOB45 min
Feb 7, 2:32 PM CSTSpecial Marine WarningMOB58 min
Feb 7, 2:33 PM CSTSpecial Marine WarningMOB42 min
Feb 7, 2:45 PM CSTSpecial Marine WarningMOB60 min
Feb 7, 2:49 PM CSTSmall Craft AdvisoryMOB9 hr
Feb 7, 2:57 PM CSTAreal Flood AdvisoryMOBBaldwin, Mobile3 hr
Feb 7, 2:58 PM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile62 min
Feb 7, 3:01 PM CSTSevere Thunderstorm WarningMOBBaldwin59 min
Feb 7, 3:10 PM CSTSpecial Weather StatementMOBCovington35 min
Feb 7, 3:14 PM CSTSpecial Marine WarningMOB61 min
Feb 7, 3:27 PM CSTSpecial Marine WarningMOB63 min
Feb 7, 3:40 PM CSTSpecial Marine WarningMOB65 min
Feb 7, 3:59 PM CSTSevere Thunderstorm WarningMOBBaldwin, Mobile46 min
Feb 7, 4:04 PM CSTSevere Thunderstorm WarningMOBBaldwin41 min
Feb 7, 4:14 PM CSTSpecial Marine WarningMOB61 min
Feb 7, 4:25 PM CSTSpecial Marine WarningMOB65 min
Feb 7, 4:48 PM CSTSpecial Marine WarningMOB27 min
Feb 7, 4:49 PM CSTSpecial Weather StatementMOBWilcox41 min
Feb 7, 5:02 PM CSTSpecial Weather StatementMOBConecuh43 min
Feb 7, 5:12 PM CSTSpecial Marine WarningMOB63 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2017Every severe thunderstorm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.